Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Do local variables in Java have default values?
No, local variables do not have default values. Once we create a local variable we must initialize it before using it.
Since the local variables in Java are stored in stack in JVM there is a chance of getting the previous value as default value. Therefore, In Java default values for local variables are not allowed.
Example
public class Sample {
public static void main(String args[] ){
int data;
System.out.println(data);
}
}
Error
C:\Sample>javac Sample.java
Sample.java:4: error: variable data might not have been initialized
System.out.println(data);
^
1 error
Updated on: 30-Jul-2019
892 Views
Advertisements